Tim Wallis Email & Phone Number

New York, New York, Us

Strategically advise and collaboratively plan the comprehensive, end-to-end operations and reliability for one of the world’s largest private cloud environments, enabling $4T in daily transactions for the global banking giant. Lead with a focus on continuous improvement of standardized policies, governance, auditing, and configuration processes to reduce organizational risk, increase regulatory compliance, and drive successful completion of internal PCI and SWIFT banking audits. Utilizing ITIL framework, oversee the technical support and business continuity of 25 datacenters consisting of 34K VMware hosts (networking, servers, storage & cloud), nearly $1Bn in assets, 250k end users, and 56 total admins Lead 22 global F/T operations and engineering staff and 40+ offshore contractors via managed services- Manage, coach, and direct 5 strategic technical operations leaders and 7 Sr. Engineers- Implemented Agile methodologies and a program for mentoring teams with talent development plans (Information Technology training, coaching, up-skilling) leading to promotions of 6 team members Drove process improvements and IT strategy to more accurately assess and allocate budgets and resources for the annual $150M technical refresh program for servers (technical debt) Coordinated and deployed the onboarding and deployment of 7,000 physical VMware hosts into Citi’s private cloud infrastructure, enabling ~30% growth in each of the past 2 years as part of Citi’s COVID response plan (Amid an unexpected departure of Director) served as interim director, restructured teams, and stabilized the department, successfully resolving 100% of outages within RTO timeframes

Fort Worth, Texas, Us

Served as 1 of a 3-member IA team and as a product manager selecting technologies and executing upgrades/change in accordance with the long-range roadmap and strategic business initiatives, ensuring the security and continuity of 3 main datacenters ($10M in assets) and 6 remote office sites with 750 end users, and 5 total admins. Major focus on partnering with vendor teams to architect and develop custom solutions and documentation for maximizing capabilities, productivity, and minimizing technical debt. Contributed to assessing and allocation of the annual $1M technical refresh program (technical debt) Consolidated a max. capacity datacenter footprint by ~50%, creating sufficient space to house new test/dev workloads, enabling ~3M in cost avoidance by not having to migrate to the public cloud Led a 20% increase in time to resolution for support requests, designed IT service management principals with infrastructure monitoring solutions, enhancing visibility, communication, and vendor adherence to best practices Coordinated requirements gathering and designed a disaster recovery solution and O365 and email backup solution with self-service restore capabilities Researched, designed, and implemented VMware Horizon View 7 environment, est. savings of $1M over 5 years

Dallas, Texas, Us

Developed, enhanced, and maintained all strategies, programs, and processes for the entire infrastructure (application architecture, storage systems, systems management, performance monitoring, automation tools, automated backup, and disaster recovery strategies). Helmed the continuous improvement of the tech stack, change management, and audit/regulatory compliance. Designed and managed the virtualization environment, including ESXi builds and maintenance, vCenter architecture and cluster configuration, VMware version migrations, and troubleshooting. Managed/partnered with vendors, including DellEMC and HPE, Microsoft for Active Directory and Server OS support, VMware for virtualization, DellEMC and Cisco for hardware support, and CyberArk for automated credential management and DMZ workspaces Led coordinated efforts to standardize remote site server installation and system administration across 9 refinery sites, partnering with site leads to retrofit existing infrastructure to align with centralized corporate standards Designed and implemented a privileged identity solution to mitigate pass the hash and eliminate audit findings

Us

Led, coached, and mentored the technical teams that provided continuity for all Windows servers and virtualization infrastructure, Active Directory (LDAP), DNS, and DHCP for the division. Managed the day-to-day project priorities, strategic planning, and capacity forecasting for designated areas while planning and executing strategic initiatives to enhance productivity, improve teamwork, minimize downtime, and increase posture for growth via strategic acquisitions. Led 3 separate teams consisting of 10 engineers responsible for the design, installation, and end-to-end support for 7,500+ servers, including 1,000 ESXi hosts and 6,500 virtual servers, across 75 remote facilities- Mentored 5 contractors who have advanced their careers and are now architects or Sr. Engineers Led a team that planned and implemented server infrastructure for a $5.5Bn acquisition Developed and implemented server standards to improve support, scalability, and overall uptime for Tier1, mission critical applications Worked with a global engineering team to redesign a small cluster solution resulting in $750K in cost avoidance over subsequent 3 years

Midland, Texas, Us

• Responsible for the configuration, monitoring, and maintenance of four Windows Server 2008R2 Citrix Farms consisting of 75+ XenApp servers, and hosting 150 multi-user applications• Developed application and server standards, modified GPO settings to increase application functionality• Organized all application installation documentation into a central repository• Configured, monitored and maintained Windows Server 2000-2008R2 Server environment• Managed and monitored Microsoft Active Directory, SQL, and Lotus Notes systems• Managed mission critical backup jobs using NetBackup• Assisted in several projects including the implementation of Altiris patching, installation and configuration of Citrix EdgeSight, and performed a midsize datacenter migration

Houston, Texas, Us

Asset management including inventory collection and maintenance of all workstations and serversResponsible for maintaining the Citrix environment including all application installations, upgrades, and patching activities